Leaf-turning device.



O. W. OLSON.

LEAF TURNING DEVICE;

APPLICATION FILED OCT. 19. 1915.

Patented Aug. 29, 1916.

2 SHEETSSHEET 1.

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O. W. OLSON.

LEAF TURNING DEViCE.

APPLICATION FILED ocr.19. !915.

l 1 96,476 Patented Aug. 29, 191.6.

2 SHEETSSHEET 2.

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UNITED STATES PATENT OFFICE.

OLOF WILLIAM OLSON, 0F JERSEY CITY, NEW JERSEY, ASSIGNOR OF ONE-IIALF TO AUGUST W. ANDERSON, OF NEW YORK, N. Y.

LEAF-TURNING DEVICE.

Application filed October 19, 1915.

To all whom it may concern:

Be it known that I, OLOF WVILLIAM OLsoN, a citizen of Sweden, and a resident of J ersey City, in the county of Hudson and State of New Jersey, have invented a certain new and useful Leaf-Turning Device, of which the following is a specification, the same being a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to devices whereby the leaves of a book, etc., may be readily turned over consecutively, and in the present example it resides in an apparatus designed for turning over the various sheets of a book, etc., the edges of alternate ones of which are preferably notched in a staggered relation so that the cut out portions of each alternate leaf shall lie one beneath the otheralthough separated by an intervening leafand the notches of the intermediate sheets shall also lie under each other, but located at one side of and at a distance from the first series of notches. It is obvious, however, that the device embodying the present invention may be used with books, etc., the edges of which are not notched.

In the drawings which accompany and form a part of this specification, Figure 1 represents a front elevation of a device constructed according to my invention. Fig. 2 is a partial side elevation of the same; Fig. 8 is a partial side elevation of the movable arm when in a medium position or in the plane of the central column; and Figs. 4 and 5 are views in detail of the segmental rack controlling device. Fig. 6 is a plan view of the rack with a music book mounted thereon; Figs. 7 and 8 are views in detail of the adjusting and indicating mechanism on the column; and Fig. 9 is a view, partly in section, of the spring fingers to enter the notch in a leaf of the music book.

Like letters of reference indicate like parts in all the views.

Referring particularly to the drawings, A denotes the column or body portion of the device which is provided with a rack or book support A distensible in each direction, and also with a base B having a pivoted pedal C. From the spindle of the pedal, a rod D extends to a segment E carried by the said column, which segment engages a gear F located near the inner end of a shaftG Specification of Letters Patent.

Patented Aug. 29, 1916.

Serial No. 56,800.

working in bearings formed by the column A and plate II attached to the head of the column. The outer ends of a spring I are re spectively attached to the said shaft and plate. At the outer extremity of the shaft is secured an arm J bent at an angle so as to lie approximately parallel with the rack A when in the position shown. The depression of the rod D serves to rotate the segment E and to vibrate the arm J, and undue upward movement of the said rod is prevented by a stop (5 supported by the adjustable thumb nut D which may engage an annular flange cl on the said rod preferably having thercbe tween an intermediate spring (Z and a slotted sleeve 6?, the desired point of limitation of the rise of the rod being indicated on the scale d.

The shaft G carries fixed to the same not only the gear F but also a plate K having two inwardly turned and spaced lugs or cars 70, 70, which plate supports in a movable and oscillatory relation a gear L. The arm J carries a telescoping supplemental arm J having a spring U and a movable and rotatable linger M which is controlled by the spring U, one end of which may be secured to a sectional sleeve T supporting the said linger and the other extremity of which may be attached to a cramping clutch-like plug V. The outer section of the sleeve may carry a screw 25" working in an annular groove 23 in said plug. The said plug may encircle the arm J and become rigidly attached thereto by screwing upon the same another and inner section of the sleeve which may carry a screw or pin 1; to work in a longitudinal groove formed in the said arm whereby lateral adjustment of the linger M may be secured.

In order that the arms J, J may be lengthened or shortened so as to conform with the size of the book a; and also so that the finger M may engage with the desired notch or re in the lower edge of the leaf of the book, I connect the supplemental arm J with the gear L by a link N. The plate H supports a parallel auxiliary plate II in which are provided bearings for the segmental rack O normally held in an inward or depressed position by means of springs O and adapted to be pressed or pushed forward by a lug P mounted on the spindle P supported by the plate H. The spindle P isactuated so as to oscillate by means of a bell crank Q carried by the said spindle and attached by a link R to a lever S which is fulcrumed on the plate H, the said lever terminating in a spring controlled pawl S. The downward movement of the arm J at either side of the book rack is limited by the adjustable stops a.

in operation, the parts being in the position illustrated in Fig. 1, where the pedal is shown as being in the commencement of the operation of being tilted so as to depress the rod D, the segment E rotates the shaft G and the arm J will be swung to the left hand, the finger M engaging with a leaf having an outer disposed notch out in the same and passing under the notch and thereby turning it over. While thus travel ing to the leit't hand, the gear L carried by the plate K engages with the segmental rack U which is now in its forward position, or in the plane of the gear L, as shown in Fig. 3, the said engagement carrying the said gear around and causing it to make half a revolution and drawing the supplemental arm J within the arm J, or backward, by the link N, whereby, after completing its movement to the left and returning back again, when the arms J, J are moved to the left hand for another operation, the finger M will register with the leaf having an inner notch formed in the same by reason of the arm J being shortened by the action of the said link, as illustrated in Fig. 6. As the arm J gradually moves to the left hand, in the operation first described, the car of the plate K will, at almost the extreme end of its movement, come into con tact with the bell crank Q and cause it to rock and throw it from the position shown in full lines in Fig. to that indicated by dotted lines. This movement of the bell crank will swing the lever S to one side by the link it and will rock the shaft P" and cause the lug P to swing sidewise or downwardly, thus allowing the springs O to draw the segmental rack Q inwardly to its recessed position, or out of the plane of the gear L. At the end of the said left hand movement of the arm J the spring l will cause the arms J, J to resume their original right hand position, should the foot be raised from the pedal. At almost the extreme end of the said right hand movement, and when the parts are in the position indicated by dotted lines in Fig. 4, the ear 7 of the plate K will contact the pawl S of the lever S and throw the said pawl to the right as indicated in full lines in the said figure, which movement will cause the link It to rock the bell crank Q and oscillate the shaft P and force the lug P against the segmental rack O and cause it to assume its forward position again and to be in the plane of the gear L so as to be engaged by the latter in its next left hand movement, at

which time the arm J will engage the leaf having the inner notch.

' From the above description it will be seen that the arm J is alternately lengthened and shortened at each movement of the arm J to the left hand, the operation of the parts in other particulars, however, being the same in each case. Undue movement of the gear L in either direction is prevented by the engagement of stops Z, carried by the said gear, with the finger j attached to the arm J. The arm J is positioned below the rack A. and approximately parallel with the same when in the position shown in the drawings, that is, in its extreme right and left hand positions; although it will be noted, as illustrated in Fig. 2, that the free end of the same is a farther distance away from the plane of the rack than is the lower pivoted extremity thereof. Consequently, the plane in which the arm J moves will intersect the plane of the rack below the latter, owing to which construction the said arm J will stand at quite a distance from the rack when in its median position. The sleeve 'l" is so held by the spring U as to maintain the finger M, when free, in a plane at right angles to that of the rack A. When the arm J is in its median position it is at such a distance from the rack that the finger M will stand at a right angle to the same. When, however, the arm J is moved either to the right or left from its median position it will approach the plane of the rack and the finger M will be contactod with the music book, the tension of the spring ll being sullicient to hold the finger M against the book so as to pass under a notch, but not strong enough to cause it to dig into the book, the said finger being kept from falling below the book by the stops a. This engagement of the finger with the book will force the former to one side or the other as the case may be, owing to the direction of movement of the arm J, and the finger will taereby be caused to assume an angular position as regards the center of the book. The said finger M will thus point in an upward direction toward the center of the music book whether the arm J is in either its extreme right or left hand position.

I wish it to be understood that I do not desire to be limited to the exact details of construction shown and described for various modifications will occur to a person skilled in the art.

What I claim as my invention is 1. In a device of the class described, a telescopic arm, means to support and actuate the same to pass around its pivot to turn a leaf over, and means to cause the said arm to assume its original position and to change its length during the said last movement,

2. In a device of the class described, a pivoted arm, means to support and actuate the same to pass under a notch at one side of the leaf of a book, means to move the said arm longitudinally and around its pivot to turn the leaf over, and means to cause the said arm to assume its normal position again and to change the length thereof.

8. In a device of the class described, an arm having a leaf engaging device, means to support and actuate the arm and the leaf engaging device in a position that the latter always points upwardly toward the center of a book under a notch at one side thereof, and means to move the arm in one direction to turn the leaf over.

at. In a device of the class described, an arm having an. engaging device to pass under a notched leaf, means to support and actuate the arm and engaging device in a position that the latter always points upwardly toward the center of a book, means to move the arm in one direction to turn the leaf over, means to reverse the movement of the arm, and means to cause the arm to as some its original position but with the en gaging device at a different distance from its axis.

5. In a device of the class described, a telescopic arm, means to support and actuate the same to pass under alternate leaves of a book, means to move the arm in one direction to turn a leaf over, a device carried by the said arm and attached to the outer section of the same to control the length of the latter, means to move the arm in an opposite direction, and means to engage the said device when the arm is moved in one direction and to be clear of the same when the arm is moved in the opposite direction.

6. In a device of the class described, an arm, means to support and actuate the same to swing back and forth to pass alternately under inner and outer notches at one side of alternate leaves of a book to turn the same over, a gear carried by said arm, a segmental rack, and means carried by said arm to move the rack to engage the gear when the arm is moved in one direction and to move the rack out of engagement with the gear when the arm is moved in the opposite direction.

7. In a device of the class described, a pivoted arm, means to support and actuate the same to swing back and forth and pass alternately under inner and outer notches at one side of alternate leaves of a book to turn the same over, controlling means to move the arm longitudinally to alternately increase and diminish the length of the arm after each leaf is turned, a pedal, and means actuated by the pedal to operate the said arm controlling device.

8. In a device of the class described, a telescopic arm having a leaf engaging device, means to support and actuate the arm to swing back and forth and the leaf engaging device to pass alternately under inner and outer notches at one side of alternate leaves of a book, and to always point toward the center of the latter, means to move the arm in one direction to turn a leaf of the book, a gear carried by the said arm and attached to the outer section of the arm, means to move the arm in an opposite direction, a pedal, and means actuated by the pedal to engage the said gear when the arm is moved in one direction, and to be clear of the same when the arm is moved in the opposite direction.

In testimony of the foregoing specification I do hereby sign the same in the city of New York, county of New York and State of New York, this 25th day of September,

OLOF WILLIAM OLSON. Witnesses:

CHRISTIAN C. W. GRAssMANN, AUG. W. ANDERSON.

Copies of this patent may be obtained for flve cents each, by addressing the "Commissioner of Patents, Washington, D. C. 

